Blasting Abrasives
Aluminium Oxide
A recyclable abrasive and the most widely used one for blast cabinets
Grain sizes
Characteristics of brown aluminium oxide
- A recyclable abrasive and the most widely used one for blast cabinets.
- A very aggressive abrasive, ideal for quickly cleaning metal surfaces as it immediately removes rust, paint, corrosion and more.
- It keeps its angular shape even after repeated use.
- Thanks to its high hardness (8-9 on the Mohs scale) and its angular shape, it can reach SA-3 roughness very quickly.
- Depending on the grain size and the blasting pressure, we can achieve a wide range of surfaces with the roughness we want.
- Because it is so aggressive, high compressed air pressure is not required (5-6 bar).
- Working at constant pressure, we achieve an ideal surface with the right roughness for coating.
- According to the research carried out, it is completely safe for people, unlike many other blasting abrasives.
- It contains no silica, which is harmful to people.
- It contains no toxic constituents such as heavy metals.
- It can be stored anywhere and for a long time without being affected by humidity, as long as it does not get wet.
Properties of Aluminium Oxide
| Shape | Hardness | Bulk density | Specific gravity | Colour |
| Angular | 9.0 Mohs | 1.70–1.92 g/cm³ | min. 3.90 g/cm³ | Dark grey |
Used in machines
- Suction-type cabinets
- Pressure-type cabinets
- Sandblasting rooms
Chemical analysis
| Al₂O₃ | TiO₂ | SiO₂ | Fe₂O₃ | CaO | MgO |
| 95.0% | 2.7% | 0.9% | 1.0% | 0.1% | 0.3% |
Packaging
In 25 kg bags.
